package net.minecraft.util;

import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;

public class MouseHelper {
	/** Mouse delta X this frame */
	public int deltaX;

	/** Mouse delta Y this frame */
	public int deltaY;

	/**
	 * Grabs the mouse cursor it doesn't move and isn't seen.
	 */
	public void grabMouseCursor() {
		Mouse.setGrabbed(true);
		this.deltaX = 0;
		this.deltaY = 0;
	}

	/**
	 * Ungrabs the mouse cursor so it can be moved and set it to the center of the
	 * screen
	 */
	public void ungrabMouseCursor() {
		Mouse.setCursorPosition(Display.getWidth() / 2, Display.getHeight() / 2);
		Mouse.setGrabbed(false);
	}

	public void mouseXYChange() {
		this.deltaX = Mouse.getDX();
		this.deltaY = Mouse.getDY();
	}
}
